From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Fam Zheng <famz@redhat.com>
Cc: linux-kernel@vger.kernel.org,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Subject: Re: [PATCH] sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable
Date: Mon, 27 Mar 2017 22:11:59 -0400 [thread overview]
Message-ID: <yq1r31i5evk.fsf@oracle.com> (raw)
In-Reply-To: <20170327141831.20936-1-famz@redhat.com> (Fam Zheng's message of "Mon, 27 Mar 2017 22:18:31 +0800")
Fam Zheng <famz@redhat.com> writes:
Hi Fam,
> --- a/drivers/scsi/sd.c
> +++ b/drivers/scsi/sd.c
> @@ -2957,6 +2957,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
> rw_max = logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
> } else
> rw_max = BLK_DEF_MAX_SECTORS;
> + rw_max = min_not_zero(rw_max, dev_max);
rw_max is in sectors, dev_max is in logical blocks.
>
> /* Combine with controller limits */
> q->limits.max_sectors = min(rw_max, queue_max_hw_sectors(q));
--
Martin K. Petersen Oracle Linux Engineering
prev parent reply other threads:[~2017-03-28 2:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-27 14:18 [PATCH] sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable Fam Zheng
2017-03-27 16:06 ` Laurence Oberman
2017-03-28 2:11 ` Martin K. Petersen [this message]
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